Surely:
Assassinations:
Narrated Al-Bara bin Azib: Allah's Apostle sent a group of persons to Abu Rafi. Abdullah bin Atik entered his house at night, while he was sleeping, and killed him.
Sahih Bukhari 5:59:370
Robbery:
Abu Sufyan and the horsemen of the Quraysh were returning from Syria following the coastal road. When Allahs Apostle heard about them he called his companions together and told them of the wealth they had with them and the fewness of their numbers. The Muslims set out with no other object than Sufyan and the men with him. They did not think that this raid would be anything other than easy booty.
Al-Tabari, Vol. 7, p. 29
Barbaric torture and killings:
Narrated Anas: The Prophet cut off the hands and feet of the men belonging to the tribe of 'Uraina and did not cauterise (their bleeding limbs) till they died.
Sahih Bukhari 8:82:795
Mercilessness to the disabled:
When a blind Jew became aware of the presence of the Messenger and the Muslims he rose and threw dust in their faces, saying, Even if you are a prophet, I will not allow you into my garden! I was told that he took a handful of dirt and said, If only I knew that I would not hit anyone else, Muhammad, I would throw it in your face. Sad rushed in and hit him on the head with his bow and split the Jews head open.
Al-Tabari, Vol. 7, p. 112, See Also Ishaq:372
Need more? There are THOUSANDS! Muhammad was but a violent psychopath suffering from schizophrenia.